How popular is Resi?

Resi is an uncommonly occurring given name for females. Resi is an equivalently unusual surname too for all people. (2000 U.S. Demographics)

Which version is better?

with its source form and related girl names. Prominent related forms of Resi (unlisted) are Tessa(#209 a year ago), Tess(#1120), Theresa(#1193), Tresa, Tessie, Teri, Tera and Terri. These relations of Resi reached the height of their popularity in the 1960s (median #916) and have become significantly less common since (#1565, ▼86.1%). Theresa has been the most popular choice, though Tessa is now the more favored form, while versions such as Terri have become less popular. (Top Baby Names, 2015)